update changelog for rpc api changes (evmos#824)

* add cmd flag for rpc api modules

* add rpc-api flags

* improve test by fixing race condition by sleeping

* edit changelog

changelog v0.4.0

v0.3.1 changes

deps: update go-ethereum to v1.9.24 (evmos#594)

* update to go-ethereum v1.9.24

* go mod tidy

* add YoloV2 to chain config

* add accessList and implement csdb accessList funcs

* cleanup

* access list tests

* changelog

* add stateDB test

* test Copy

Co-authored-by: Federico Kunze <[email protected]>

initial tag